JP2018036041A - Condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a condenser capable of setting a refrigerant inclusion amount at a refrigeration cycle to an appropriate inclusion amount at an early stage and at the same time capable of expanding a stabilizing range where over-cooling degree becomes constant.SOLUTION: A condenser in this invention comprises a condensing part 1A; an over-cooling part 1B above the condensing part 1A; and a liquid receiver 2. Within the liquid receiver 2 are formed a first space 31 communicated with the condensing part 1A through a refrigerant inflow port 26 and a second space 32 positioned above the first space 31 and communicated with the over-cooling part 1B through a refrigerant outflow port 27. Within the liquid receiver 2 is arranged a partition member 29 for defining an inside part of the liquid receiver 2 into the first space 31 and the second space 32. Within the first space 31 of the liquid receiver 2 is arranged a sucking-up pipe 37 of which vertical both ends are opened to communicate the first space 31 with the second space 32. The partition member 29 is provided with an inner volume adjustment part 33 for increasing an inner volume of the first space 31 and also decreasing an inner volume of the second space 32.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a capacitor used in a refrigeration cycle constituting a car air conditioner, for example.

  In this specification and claims, the top and bottom, left and right in FIGS. 1 and 2 are referred to as top and bottom and left and right.

  As a condenser of the refrigeration cycle constituting the car air conditioner, it includes a condensing unit, a supercooling unit provided above the condensing unit, and a liquid receiver provided between the condensing unit and the supercooling unit, The condensing unit and the supercooling unit are provided with at least one heat exchanging path having a plurality of heat exchanging tubes arranged in parallel with the longitudinal direction thereof being directed in the left-right direction and spaced apart in the vertical direction. The refrigerant that has flowed out flows into the supercooling section through the liquid receiver, and is located above the refrigerant inlet and the refrigerant inlet into which the refrigerant flows into the liquid receiver from the condenser section. A refrigerant outlet is formed to flow out the refrigerant in the part, and a first space communicating with the condenser through the refrigerant inlet at a height position between the condenser and the supercooling part in the receiver. The refrigerant outlet located above the first space A horizontal plate-shaped partition member that is partitioned into a second space that communicates with the supercooling unit is disposed, and upper and lower ends are opened in the first space of the liquid receiver, and the first space and the second space are passed through. There is known a capacitor in which a suction pipe is arranged, the inside of the suction pipe is communicated with the second space via a through-hole-like communicating portion provided in the partition member, and an operation member is provided on the upper surface of the partition portion. (See Patent Document 1).

  In the capacitor described in Patent Document 1, the refrigerant that has passed through the condensing unit flows into the first space in the receiver from the refrigerant inlet, and then flows into the second space through the suction pipe, and then from the refrigerant outlet. It is designed to enter the supercooling section.

  However, in the capacitor described in Patent Document 1, it takes a relatively long time to set the refrigerant charging amount to an appropriate charging amount with a constant degree of supercooling when the refrigerant is sealed in the refrigeration cycle using the capacitor. At the same time, there is a problem that the width of the stabilization region where the degree of supercooling is constant becomes relatively narrow.

Japanese Patent No. 4743802

  The object of the present invention is to solve the above-mentioned problems, to make the amount of refrigerant enclosed in the refrigeration cycle an appropriate amount at an early stage, and to widen the width of the stabilization region where the degree of supercooling is constant. It is to provide a capacitor.

  In order to achieve the above object, the present invention comprises the following aspects.

1) It has a condensing part, a supercooling part provided above the condensing part, and a liquid receiver provided between the condensing part and the supercooling part. At least one heat exchange path consisting of a plurality of heat exchange tubes arranged in parallel in the vertical direction with the longitudinal direction turned to the left and right direction is provided, and the refrigerant flowing out of the condensing part The refrigerant outlet is configured to flow into the supercooling section, and the refrigerant inlet into which the refrigerant flows from the condenser section, and the refrigerant outlet that is located above the refrigerant inlet and flows out of the refrigerant to the supercooling section. In the liquid receiver, a first space that communicates with the condensing unit via the refrigerant inlet and a second space that is located above the first space and communicates with the supercooling unit via the refrigerant outlet. A partition that is formed and divides the liquid receiver into a first space and a second space in the liquid receiver. In the first space of the liquid receiver, a suction pipe that is open at both upper and lower ends and passes through the first space and the second space is disposed, and a communication portion in which the inside of the suction pipe is provided in the partition portion is provided. In the capacitor connected to the second space through
The capacitor | condenser by which the partition part is provided with the internal volume adjustment part which decreases the internal volume of 2nd space while increasing the internal volume of 1st space.

  2) The partition portion is formed of a peripheral wall and a closed wall that closes the upper end opening of the peripheral wall and is opened downward, and is provided outwardly on the peripheral wall of the cylindrical portion. It consists of a seal part that is in contact with the inner peripheral surface of the receiver at a height position between the outlet and the inner space of the cylindrical part is communicated with the first space, and the cylindrical part constitutes the inner volume adjusting part. The capacitor described in 1) above.

  3) The capacitor as described in 2) above, wherein an upper end portion of the cylindrical portion constituting the inner volume adjusting portion of the partition portion is located above the refrigerant outlet.

  4) The suction pipe is provided integrally with the closed wall of the cylindrical part constituting the inner volume adjusting part of the partition part, and the communication is made of a through hole and communicates the inside of the suction pipe to the second space. The capacitor as described in 2) or 3) above, wherein a portion is provided.

  5) A cylindrical operation part protruding upward and having both upper and lower ends opened is provided in a portion around the through hole in the closed wall of the cylindrical part constituting the inner volume adjusting part of the partition part, and the inside of the cylindrical operation part penetrates The capacitor as described in 4) above, which communicates with the hole and the second space.

  6) The suction pipe is formed separately from the cylindrical part constituting the internal volume adjusting part of the partition part, and the upper end part of the suction pipe is inserted into the through hole formed in the closed wall of the cylindrical part. The capacitor according to 2) or 3) above, wherein the upper end opening of the capacitor faces the second space.

  7) A cylindrical desiccant container extending downward from the lower end of the peripheral wall of the cylindrical part constituting the inner volume adjusting part of the partition part is provided, and the desiccant is put into the cylindrical part from inside the desiccant accommodating part. The capacitor according to any one of 2) to 6) above.

  8) The capacitor according to any one of 2) to 6) above, wherein a desiccant bag having air permeability and liquid permeability and containing a desiccant is disposed in the first space in the liquid receiver. .

  According to the capacitors 1) to 8), the receiver includes the refrigerant inlet through which the refrigerant flows in from the condenser, and the refrigerant outlet that is located above the refrigerant inlet and flows out to the supercooling unit. A first space that is formed and communicates with the condensing part via the refrigerant inlet and a second space that is located above the first space and communicates with the supercooling part via the refrigerant outlet is formed in the liquid receiver. And a partition that divides the interior of the liquid receiver into a first space and a second space is provided in the liquid receiver, the upper and lower ends open into the first space of the liquid receiver, and the first space In a condenser in which a suction pipe passing through the second space is arranged and the inside of the suction pipe is communicated with the second space via a communication part provided in the partition part, the internal volume of the first space is provided in the partition part. As an internal volume adjustment unit is provided to increase the volume and decrease the internal volume of the second space, When the refrigerant is sealed in the refrigeration cycle using this condenser, the second space of the liquid receiver is filled with the liquid phase refrigerant in a relatively short time. Therefore, when the refrigerant is filled, the heat exchange pipe of the refrigerant supercooling path can be filled with the liquid phase refrigerant at an early stage, and as a result, the amount of refrigerant filled in the refrigeration cycle becomes constant at an early stage. It becomes possible to make it an appropriate amount.

  Further, since the internal volume of the first space of the liquid receiver is increased by the internal volume adjusting unit, the width of the stabilization region where the degree of supercooling is constant, that is, the width of the refrigerant filling amount where the degree of supercooling is constant is obtained. Become wider. Therefore, more stable supercooling characteristics can be obtained against load fluctuations and refrigerant leakage. Further, in general, the capacity of the liquid receiver is determined in order to determine the width of the stabilization region required for the capacitor, but an internal volume adjusting unit for increasing the internal volume of the first space is provided. This makes it possible to reduce the size and weight of the receiver.

  According to the capacitor 2), the inner volume adjusting section can be provided in the partition section with a relatively simple configuration.

  According to the capacitor of 3), the effect described in 1) is excellent.

  According to the capacitor of 4), the suction pipe passing through the first space and the second space can be easily and reliably disposed in the first space of the liquid receiver.

  According to the capacitor of 5) above, if the upper end of the liquid receiver can be freely opened and closed, by using the operation part, the partition part and the suction pipe can be easily attached to and detached from the liquid receiver. .

  According to the capacitor 6), the suction pipe passing through the first space and the second space can be easily and reliably disposed in the first space of the liquid receiver.

  According to the capacitor 7), it is not necessary to prepare a separate container for containing the desiccant, and the number of parts can be reduced. Further, since the desiccant can be disposed in the upper part in the first space, the lower part in the first space can be efficiently used. For example, the space for installing the filter can be increased, or the space immediately after flowing in from the condensing part in the receiver can be expanded to prevent obstruction of the refrigerant flow due to obstacles. It becomes possible to keep the operating status.

It is a front view which shows the whole structure of the capacitor | condenser of this invention. FIG. 2 is a front view schematically showing the capacitor of FIG. 1. It is the vertical sectional view which abbreviate | omitted the intermediate part which expands and shows the internal structure of the liquid receiver of the capacitor | condenser of FIG. It is a disassembled perspective view which expands and shows the internal structure of the liquid receiver of the capacitor | condenser of FIG. It is the vertical sectional view which omitted a part showing the modification of the internal structure of the liquid receiver of the capacitor of FIG. It is the perspective view which notched the principal part which shows the modification of the internal structure of the liquid receiver of the capacitor | condenser of FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the following description, it is assumed that the air flow direction in FIG.

  In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  FIG. 1 specifically shows the overall configuration of the capacitor of the present invention, and FIG. 2 schematically shows the capacitor of FIG. 1 with some members omitted. 3 and 4 show the configuration of the main part of the capacitor shown in FIG.

  1 and 2, the condenser (1) is condensed with the condenser (1A), the supercooling part (1B) provided above the condenser (1A), and with the longitudinal direction directed vertically. A tank-shaped liquid receiver (2) provided between the section (1A) and the supercooling section (1B) and having a gas-liquid separation function.

  The condenser (1) has a plurality of flat aluminum heat exchange tubes (3) arranged in the vertical direction with the width direction oriented in the ventilation direction and the longitudinal direction oriented in the left-right direction, and the longitudinal direction. Next to two aluminum header tanks (4) and (5), which are arranged in the vertical direction and spaced apart from each other in the horizontal direction, and whose longitudinal ends of the heat exchange pipe (3) are joined by brazing material Aluminum corrugated fins (6) placed between the matching heat exchange tubes (3) and outside the heat exchange tubes (3) at both upper and lower ends and joined to the heat exchange tubes (3) by brazing material, and both upper and lower ends An aluminum side plate (7) disposed outside the corrugated fin (6) and joined to the corrugated fin (6) by a brazing material. Hereinafter, joining with a brazing material is referred to as brazing.

  The condenser (1A) of the condenser (1) is provided with at least one, here, one heat exchange path (P1) composed of a plurality of heat exchange tubes (3) arranged continuously in the vertical direction. In addition, the supercooling section (1B) of the condenser (1) is provided with at least one, in this case, one heat exchanging path (P2) composed of a plurality of heat exchanging pipes (3) arranged vertically. ing. And the refrigerant | coolant flow direction of all the heat exchange pipe | tubes (3) which comprise each heat exchange path | pass (P1) (P2) is the same, and the heat exchange pipe | tube (3) of two adjacent heat exchange paths | passes The refrigerant flow direction is different. Here, the heat exchange path (P1) of the condensing part (1A) is referred to as a first heat exchange path, and the heat exchange path (P2) of the supercooling part (1B) is referred to as a second heat exchange path.

  Both header tanks (4) and (5) have aluminum partition members (8) (9) provided at height positions between the first heat exchange path (P1) and the second heat exchange path (P2), respectively. ) Is divided into two compartments (4a), (4b), (5a), and (5b) that are lined up and down, and the part of the capacitor (1) that is located below both partition members (8) and (9) The part which becomes the condensing part (1A) and is located above both partition members (8) and (9) is the supercooling part (1B).

  The compartment (4a) below the partition member (8) in the right header tank (4) is a condensing part inlet through which the upstream end of the heat exchange pipe (3) of the first heat exchange path (P1) in the refrigerant flow direction communicates. The header section (11), and the upper section (4b) is also a subcooling section outlet header section that communicates with the downstream end of the heat exchange pipe (3) of the second heat exchange path (P2) in the refrigerant flow direction. (12). Further, the compartment (5a) below the partition member (9) in the left header tank (5) is condensed through the downstream end portion in the refrigerant flow direction of the heat exchange pipe (3) of the first heat exchange path (P1). The upper section (5b) is also an outlet header section (13), and the upper cooling section entrance (5b) is connected to the upstream end of the heat exchange pipe (3) of the second heat exchange path (P2) in the refrigerant flow direction. It is a header part (14).

  An aluminum refrigerant inlet member having a refrigerant inlet (15) formed at an intermediate portion in the vertical direction of the condenser inlet header (11) of the right header tank (4) and leading to the refrigerant inlet (15) in the right header tank (4) (16) is joined. Also, a refrigerant outlet (17) is formed in the supercooling section outlet header section (12) of the right header tank (4), and an aluminum refrigerant outlet member (18) communicates with the refrigerant outlet (17) in the right header tank (4). Are joined. A header side refrigerant outlet (19) is formed in the portion near the lower end of the condensing portion outlet header portion (13) of the left header tank (5), and the header is also formed in the lower portion of the supercooling portion inlet header portion (14). A part-side refrigerant inlet (21) is formed.

  As shown in FIGS. 3 and 4, the liquid receiver (2) is made of aluminum cylinder (23) and aluminum that is brazed to the lower end of the cylinder (23) to close the lower end opening of the cylinder (23). A liquid receiver body (22) composed of a lower end closing member (24) and brazed to the left header tank (5), and a cylindrical column made of synthetic resin that closes the upper end opening of the liquid receiver body (22) And a plug (25) (closing member). A receiver-side refrigerant inlet (26) communicating with the header-side refrigerant outlet (19) is formed in a portion near the lower end of the cylindrical body (23) of the receiver body (22). A receiver side refrigerant outlet (27) communicating with the header portion side refrigerant inlet (21) is formed at a height position above 9). A female screw (23a) is formed at the upper end of the inner peripheral surface of the cylindrical body (23) of the receiver body (22), and the male screw (25a) formed at the upper portion of the outer peripheral surface of the plug (25). Is inserted into the female screw (23a) of the liquid receiver body (22), so that the plug (25) is detachably attached to the upper end of the liquid receiver body (22). A portion below the internal thread (23a) on the inner peripheral surface of the cylindrical body (23) of the receiver body (22) and a portion below the external thread (25a) on the outer peripheral surface of the plug (25) Is sealed by an O-ring (28).

  The liquid receiver (2) is partitioned into two compartments (2a) and (2b) arranged vertically by a synthetic resin partition member (29) (partition), and the lower compartment (2a) receives the compartment. It becomes the 1st space (31) which leads to a condensation part (1A) via a liquid side refrigerant inlet (26), and upper section (2b) is located above the 1st space (31), and receiver side refrigerant A second space (32) communicates with the supercooling section (1B) through the outlet (27). The partition member (29) is provided with an internal volume adjustment section (33) that increases the internal volume of the first space (31) and decreases the internal volume of the second space (32).

  The partition member (29) is composed of a peripheral wall (34a) and a closed wall (34b) that closes the upper end opening of the peripheral wall (34a) and opens downward, and the peripheral wall of the cylindrical part (34) (34a) provided at the lower end in the radial direction and having a peripheral edge at a height position between the receiver-side refrigerant inlet (26) and the receiver-side refrigerant outlet (27). The cylindrical part (23) of (2) comprises a seal part (35) in contact with the inner peripheral surface. The internal space of the cylindrical portion (34) of the partition member (29) is communicated with the first space (31), whereby the internal volume of the first space (31) is increased and the second space ( The internal volume of 32) is reduced, and the cylindrical part (34) constitutes the internal volume adjusting part (33). Further, the upper end portion of the cylindrical portion (34) of the partition member (29) is located at a height higher than the liquid receiver side refrigerant outlet (27), thereby the second portion in the liquid receiver (2). The internal volume of the space (32) is effectively reduced. A through hole (36) is formed in the central portion of the closed wall (34b) of the cylindrical portion (34) of the partition member (29).

  A suction pipe having a circular cross section that opens in the first space (31) in the liquid receiver (2) and has both the upper and lower ends open and the portion near the lower end of the first space (31) and the second space (32). (37) is arranged. The upper end portion of the suction pipe (37) is integrated with a portion around the through hole (36) on the lower surface of the closed wall (34b) of the cylindrical portion (34) of the partition member (29). Therefore, the inside of the suction pipe (37 is communicated with the second space (32) through the communication portion including the through hole (36). The lower end of the suction pipe (37) is connected to the first space ( A filter (38) for removing foreign substances from the refrigerant flowing from 31) into the suction pipe (37) is provided.

  A cylindrical desiccant container (39) is provided integrally with the lower end of the peripheral wall (34a) of the cylindrical part (34) of the partition member (29) so as to protrude downward, and the desiccant container ( 39) A desiccant (41) is placed from the inside to the cylindrical part (34). The lower end of the desiccant container (39) is located above the lower end of the suction pipe (37), and the portion around the suction pipe (37) at the lower end opening of the desiccant container (39) is made of synthetic resin. It is blocked by the closing member (42). In addition, a plurality of refrigerant passage holes (43) are formed in the peripheral wall (34a) of the desiccant container (39) in a penetrating manner.

  Further, a cylindrical operation part (44) protruding upward and having upper and lower ends opened at a portion around the through hole (36) on the upper surface of the closed wall (34b) of the cylindrical part (34) of the partition member (29). ) Are provided integrally. Accordingly, the suction pipe (37) communicates with the second space (32) through the through hole (36) of the closed wall (34b) of the cylindrical portion (34) and the inside of the operation portion (44). A through hole (44a) is formed in a portion located on one diameter in the peripheral wall of the operation portion (44). The upper end portion of the operation portion (44) is located in a recess (25b) formed in the lower surface of the plug (25).

  The cylindrical part (34), the seal part (35), the suction pipe (37), the desiccant storage part (39) and the operation part (44) of the partition member (29) are integrally formed of synthetic resin.

  The condenser (1) constitutes a refrigeration cycle together with a compressor, an expansion valve (decompressor) and an evaporator, and is mounted on a vehicle as a car air conditioner.

  In the condenser (1) having the above-described configuration, the high-temperature and high-pressure gas-phase refrigerant compressed by the compressor passes through the refrigerant inlet member (16) and the refrigerant inlet (15), and enters the condenser inlet header of the right header tank (4). Into the heat exchanger pipe (3) of the first heat exchange path (P1) and is condensed while flowing leftward in the first heat exchange path (P1). ) Flows in. The refrigerant that has flowed into the condensing part outlet header (13) of the left header tank (5) passes through the header part side refrigerant outlet (19) and the receiver side refrigerant inlet (26). ) Enters the first space (31).

  The refrigerant that has flowed into the first space (31) in the liquid receiver (2) is a gas-liquid mixed phase refrigerant, and the liquid-phase mixed liquid refrigerant of the gas-liquid mixed phase refrigerant is lower in the liquid receiver (2) due to gravity. It collects in. Further, in the first space (31) of the liquid receiver (2), the refrigerant comes into contact with the desiccant (41) in the desiccant container (39) through the refrigerant passage hole (43), so that Moisture is removed. The liquid phase main mixed refrigerant accumulated in the lower part of the liquid receiver (2) passes through the filter (38) and enters the suction pipe (37), inside the suction pipe (37) and the cylinder of the partition member (29). It flows into the second space (32) through the through hole (36) of the shaped part (34) and the operation part (44).

  The liquid phase main mixed refrigerant flowing into the second space (32) in the liquid receiver (2) passes through the liquid receiver side refrigerant outlet (27) and the header part side refrigerant inlet (21) to the left header tank. It enters the supercooling part inlet header part (14) of (5).

  The refrigerant that entered the supercooling section inlet header section (14) of the left header tank (5) was supercooled while flowing to the right in the heat exchange pipe (3) of the second heat exchange path (P2). Thereafter, it enters the supercooling section outlet header section (12) of the right header tank (4), flows out through the refrigerant outlet (17) and the refrigerant outlet member (18), and is sent to the evaporator through the expansion valve.

  When the refrigerant is sealed in the above-described car air conditioner using the condenser, the internal volume of the first space (31) is increased and the second volume is increased by the function of the internal volume adjusting section (33) of the partition member (29). Since the internal volume of the space (32) is reduced, the second space (32) of the liquid receiver (2) is filled with the liquid refrigerant in a relatively short time. Therefore, the inside of the heat exchange pipe (3) of the second heat exchange path (P2), which is the refrigerant supercooling path, can be filled with liquid phase refrigerant at an early stage, and as a result, the amount of refrigerant charged in the refrigeration cycle can be reduced at an early stage. Thus, it is possible to set the proper amount of sealing so that the degree of supercooling is constant. In addition, since the width of the stabilization region where the degree of supercooling is constant, that is, the range of the refrigerant filling amount where the degree of supercooling is constant is widened, more stable supercooling characteristics against load fluctuations and refrigerant leakage can be obtained. .

  In the embodiment described above, the gap between the outer peripheral surface of the seal portion (35) of the partition member (29) and the inner peripheral surface of the cylindrical body (23) of the liquid receiver body (22) of the liquid receiver (2). , And may be sealed by an O-ring.

  5 and 6 show a modification of the internal structure of the liquid receiver (2) used in the capacitor (1).

  5 and 6, the first space (31) in the liquid receiver (2) is disposed in the first space (31), the upper and lower ends are open, and the first space (31) is closer to the lower end and the second space (32). The suction pipe (50) having a circular cross section that is passed through is formed separately from the cylindrical part (34) constituting the inner volume adjustment part (33) of the partition member (29), and the suction pipe (50) Is attached to the closing wall (34b) of the cylindrical portion (34). That is, a circular through hole (51) is formed at a position eccentric from the center of the closed wall (34b) of the cylindrical portion (34), and the upper end portion of the suction pipe (50) is inserted into the through hole (51). Thus, the suction pipe (50) is attached to the closed wall (34b), and the upper end opening of the suction pipe (50) faces the second space (32). Further, the upper protrusion (52) protrudes upward and the protruding end abuts the lower surface of the plug (25) at a position shifted from the through hole (51) on the upper surface of the closed wall (34b) of the cylindrical portion (34). ) Are integrally formed so as not to block the entire lower end opening of the recess (25b).

  The first space (31) in the liquid receiver (2) and the part below the seal part (35) of the partition member (29) have air permeability and liquid permeability and contain desiccant, and A desiccant bag (53) whose longitudinal direction is directed in the vertical direction is arranged.

  Other configurations are the same as the internal structure of the liquid receiver (2) in the above-described embodiment.

  The capacitor | condenser by this invention is used suitably for the car air conditioner mounted in a motor vehicle.

(1): Capacitor
(1A): Condensing part
(1B): Supercooling section
(2): Receiver
(3): Heat exchange pipe
(26): Receiver side refrigerant inlet
(27): Receiver side refrigerant outlet
(29): Partition member (partition)
(31): 1st space
(32): Second space
(33): Internal volume adjuster
(34): Cylindrical part
(34a): Perimeter wall
(34b): Closed wall
(35): Seal part
(36): Through hole
(37): Suction pipe
(39): Desiccant container
(41): Desiccant
(44): Operation unit
(50): Suction pipe
(51): Through hole
(53): Desiccant bag
(P1) (P2): Heat exchange path

Claims (8)

A condensing part, a supercooling part provided above the condensing part, and a liquid receiver provided between the condensing part and the supercooling part. At least one heat exchange path consisting of a plurality of heat exchange tubes arranged in parallel at intervals in the vertical direction, and the refrigerant flowing out of the condensing part passes through the receiver. A refrigerant inlet into which the refrigerant flows from the condensing unit and a refrigerant outlet that is located above the refrigerant inlet and flows out to the supercooling unit are formed in the receiver. In the liquid receiver, a first space communicating with the condensing part via the refrigerant inlet and a second space positioned above the first space and communicating with the supercooling part via the refrigerant outlet are formed. The partition part which divides the inside of the liquid receiver into the first space and the second space in the liquid receiver In the first space of the liquid receiver, a suction pipe that is open at both the upper and lower ends and passes through the first space and the second space is disposed, and the inside of the suction pipe is disposed through a communication portion provided in the partition portion. In the capacitor connected to the second space,
The capacitor | condenser by which the partition part is provided with the internal volume adjustment part which decreases the internal volume of 2nd space while increasing the internal volume of 1st space. The partition part is composed of a peripheral wall and a closed wall that closes the upper end opening of the peripheral wall and is opened downward, and is provided outward on the peripheral wall of the cylindrical part, and the peripheral part is a refrigerant inlet and a refrigerant outlet. And a seal portion that is in contact with the inner peripheral surface of the receiver, and the inner space of the cylindrical portion communicates with the first space, and the cylindrical portion constitutes an internal volume adjusting portion. The capacitor according to claim 1. The capacitor according to claim 2, wherein an upper end portion of the cylindrical portion constituting the inner volume adjusting portion of the partition portion is located above the refrigerant outlet. A suction pipe is integrally provided on the closed wall of the cylindrical portion constituting the internal volume adjusting part of the partition part, and the communication part that is formed of a through hole and communicates the inside of the suction pipe to the second space is formed on the closed wall. The capacitor according to claim 2 or 3, wherein the capacitor is provided. A cylindrical operation part protruding upward and having both upper and lower ends opened is provided in a portion around the through hole in the closed wall of the cylindrical part constituting the inner volume adjusting part of the partition part, and the inside of the cylindrical operation part has a through hole and The capacitor according to claim 4, wherein the capacitor communicates with the second space. The suction pipe is formed separately from the cylindrical portion constituting the inner volume adjusting portion of the partition portion, and the upper end of the suction pipe is inserted into a through hole formed in the closed wall of the cylindrical portion, and the upper end of the suction pipe The capacitor according to claim 2 or 3, wherein the opening faces the second space. A cylindrical desiccant container extending downward from the lower end of the peripheral wall of the cylindrical part constituting the inner volume adjusting part of the partition part is provided, and the desiccant is put into the cylindrical part from the inside of the desiccant container. The capacitor according to claim 2. The capacitor | condenser in any one of Claims 2-6 by which the desiccant bag which has air permeability and liquid permeability and accommodated the desiccant was arrange | positioned in the 1st space in a liquid receiver.

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